The design of a multi-channel (M = 5) lattice form band pass optical delay line filter is reported. The filter synthesis is based on the division of total transfer function into unit blocks and the circuit parameters are obtained by constrained least square method. This band pass filter has better performance compared with the results obtained in the conventional design techniques. For a filter of order 35, a stop band attenuation greater than 50dB is achieved. Further, the band pass filter is introduced in a optical fiber link and simulated in Optisystem software, to verify its characteristics.
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